655235563 has 2 divisors, whose sum is σ = 655235564. Its totient is φ = 655235562.

The previous prime is 655235557. The next prime is 655235617. The reversal of 655235563 is 365532556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655235563 - 2⁵ = 655235531 is a prime.

It is not a weakly prime, because it can be changed into another prime (655235543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327617781 + 327617782.

It is an arithmetic number, because the mean of its divisors is an integer number (327617782).

Almost surely, 2^655235563 is an apocalyptic number.

655235563 is a deficient number, since it is larger than the sum of its proper divisors (1).

655235563 is an equidigital number, since it uses as much as digits as its factorization.

655235563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405000, while the sum is 40.

The square root of 655235563 is about 25597.5694744638. The cubic root of 655235563 is about 868.5586575959.

The spelling of 655235563 in words is "six hundred fifty-five million, two hundred thirty-five thousand, five hundred sixty-three".